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    Germination stimulation of striga gesnerioides seeds by hosts and nonhosts

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    berner-germination-1998.pdf (1003.Kb)
    Date
    1998
    Author
    Berner, D.K.
    Williams, O.A.
    Type
    Journal Article
    Metadata
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    Abstract/Description
    Cowpea (Vigna unguiculata) is an important source of protein in Africa, but production is hindered by the parasitic plant Striga gesnerioides. Crop rotation with non-host cultivars, selected to stimulate parasite seed germination, is being used successfully to control other Striga spp. and may have potential to control S. gesnerioides. Little information has been available on nonhosts of S. gesnerioides that are capable of stimulating germination of parasite seeds. A laboratory procedure was used to evaluate species and cultivars for their ability to stimulate S. gesnerioides seed germination. Genotypes of all Vigna spp. tested stimulated parasite seed germination. Some genotypes of the non-host species Cajanus cajan, Lablab purpureus, Sphenostylis stenocarpa, and Sorghum bicolor also stimulated parasite seed germination. One cultivar of Sorghum bicolor stimulated significantly more germination than any other cultivar or species. Control of S. gesnerioides through rotation with selected non-host cultivars has potential if selection is done with the parasite isolate(s) from the locality of intended use. When seeds of single-plant isolates of S. gesnerioides were tested against roots of seedlings from Sorghum bicolor landraces and from a susceptible cowpea cultivar, only specific isolate and plant combinations resulted in parasite seed germination. These specific interactions have broader implications for parasite survival.
    https://doi.org/10.1094/PDIS.1998.82.11.1242
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/5678
    Digital Object Identifier (DOI)
    https://doi.org/10.1094/PDIS.1998.82.11.1242
    IITA Subjects
    Cowpea; Genetic Improvement; Plant Genetic Resources
    Agrovoc Terms
    Germination Inhibitors; Sorghum; Striga Hermonthica; Genotypes
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Collections
    • Journal and Journal Articles4835
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